5152d0c9f7
Foundation for replacing fold's dead/abstract binary encoder with a real
SSA P-Code frontend. Verified root-cause gap: serializeBinaryIR() emits only
data-discovery nodes (sections/strings/imports/exports); the control-flow
BinaryExprKind values (BasicBlock/CallSite/...) are never constructed, so the
Z3-BB encoder's encodable filter is always empty and encodeBinaryBBs never
runs — hence 0 binary Z3 findings. The P-Code pipeline supersedes that path.
Phase 0 — docs/internal/ghidra-pcode-integration-research.md: P-Code opcode
core, the decompiler C++ embedding API (LoadImage/SleighArchitecture/Funcdata),
the CORE+DECCORE+SLEIGH source sets, no-bison finding, and pypcode as build
reference.
Phase 1 — vendored Ghidra decompiler at pinned commit (Ghidra_12.1_build,
7e89d94e34...) under third_party/ghidra-decompiler/ (cpp + AArch64 specs +
Apache-2.0 LICENSE + VENDOR.md + .gitignore for build artifacts). Validated by
hand on this clang-21/macOS toolchain:
- full SSA engine (CORE+DECCORE+SLEIGH, 80 files incl. heritage/funcdata/
action) compiles clean, -std=c++11 -O2, NO BFD, NO bison (generated
parsers are committed upstream; ruleparse isn't in the lib set);
- sleigh compiler builds; AArch64 .slaspec -> .sla compiles;
- tools/pcode_dump.cpp (custom LoadImage, no BFD) lifts the real arm64
sym._div_by_zero_direct to correct P-Code: `mov w9,#0 -> COPY(const 0)`,
`sdiv -> INT_SDIV(w8,w9)` — divisor zero-ness explicit in the data flow,
so the Phase-3 encoder proves div-by-zero trivially, multi-arch.
Not yet meson-wired (next step) and no fold-side IR/encoder yet (Phase 2-3);
this commit is the validated vendor + smoke tool.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
130 lines
3.3 KiB
C++
130 lines
3.3 KiB
C++
/* ###
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* IP: GHIDRA
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "raw_arch.hh"
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namespace ghidra {
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ElementId ELEM_RAW_SAVEFILE = ElementId("raw_savefile",237);
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// Constructing this object registers the capability
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RawBinaryArchitectureCapability RawBinaryArchitectureCapability::rawBinaryArchitectureCapability;
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RawBinaryArchitectureCapability::RawBinaryArchitectureCapability(void)
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{
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name = "raw";
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}
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RawBinaryArchitectureCapability::~RawBinaryArchitectureCapability(void)
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{
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SleighArchitecture::shutdown();
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}
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Architecture *RawBinaryArchitectureCapability::buildArchitecture(const string &filename,const string &target,ostream *estream)
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{
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return new RawBinaryArchitecture(filename,target,estream);
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}
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bool RawBinaryArchitectureCapability::isFileMatch(const string &filename) const
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{
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return true; // File can always be opened as raw binary
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}
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bool RawBinaryArchitectureCapability::isXmlMatch(Document *doc) const
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{
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return (doc->getRoot()->getName() == "raw_savefile");
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}
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void RawBinaryArchitecture::buildLoader(DocumentStorage &store)
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{
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RawLoadImage *ldr;
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collectSpecFiles(*errorstream);
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ldr = new RawLoadImage(getFilename());
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ldr->open();
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if (adjustvma != 0)
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ldr->adjustVma(adjustvma);
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loader = ldr;
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}
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void RawBinaryArchitecture::resolveArchitecture(void)
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{
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archid = getTarget(); // Nothing to derive from the image itself, we just copy in the passed in target
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SleighArchitecture::resolveArchitecture();
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}
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void RawBinaryArchitecture::postSpecFile(void)
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{
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Architecture::postSpecFile();
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((RawLoadImage *)loader)->attachToSpace(getDefaultCodeSpace()); // Attach default space to loader
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}
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RawBinaryArchitecture::RawBinaryArchitecture(const string &fname,const string &targ,ostream *estream)
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: SleighArchitecture(fname,targ,estream)
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{
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adjustvma = 0;
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}
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void RawBinaryArchitecture::encode(Encoder &encoder) const
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{
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encoder.openElement(ELEM_RAW_SAVEFILE);
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encodeHeader(encoder);
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encoder.writeUnsignedInteger(ATTRIB_ADJUSTVMA, adjustvma);
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types->encodeCoreTypes(encoder);
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SleighArchitecture::encode(encoder);
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encoder.closeElement(ELEM_RAW_SAVEFILE);
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}
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void RawBinaryArchitecture::restoreXml(DocumentStorage &store)
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{
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const Element *el = store.getTag("raw_savefile");
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if (el == (const Element *)0)
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throw LowlevelError("Could not find raw_savefile tag");
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restoreXmlHeader(el);
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{
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istringstream s( el->getAttributeValue("adjustvma"));
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s.unsetf(ios::dec | ios::hex | ios::oct);
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s >> adjustvma;
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}
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const List &list(el->getChildren());
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List::const_iterator iter;
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iter = list.begin();
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if (iter != list.end()) {
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if ((*iter)->getName() == "coretypes") {
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store.registerTag(*iter);
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++iter;
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}
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}
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init(store); // Load the image and configure
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if (iter != list.end()) {
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store.registerTag(*iter);
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SleighArchitecture::restoreXml(store);
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}
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}
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} // End namespace ghidra
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